Hammer for joint binders



Jan. 23, 123., 11,442,875

E C. GLARDON. HAMMER FOR JOINT Bmosns. FILED Fae. 6, i914.

MA M W 552% pg/wm Patented Jan. 23, 1923.

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EDOUABD CHARLES GLARDON, OF HAMBURG, GERMANY.

HAIVIMER FOR JOINT BINDERS.

Application filed February 6, 1914. Serial No. 816,958.

1 (4Z2 whom it may concern Be it known that I, EooUAno CHARLES Gamma, a citizen of the Swiss Republic, and resident of No. S/l l Speersort. llam- 5 burg. in the Empire of Germany. have invented a new and useful Improved Hammer for Joint Binders, of which the following is a specification.

The present invention relates to an improved hammer particularly designed for use in connection with joint binders, such as are employed for binding together wooden planks, boards and the like. and especially for securing the lids or covers on chests and.

boxes tosafeguard the contents of the latter against pilfering and fraudulent access bein had thereto.

The joint binders commonly employed as an insurance against secret and unnoticeable opening of chests and boxes consist of.

a U-shaped safety clamp, the perforated shanks of which are to be driven into the twoparts to be secured together, and of a flat barbed nail, which is driven into the said two parts and through the perforations of the shanks until its head is countersunk in one of those parts, to prevent the clamp from being withdrawn without leaving evidence that it had been tampered with.

The employment of joint binders of the nature set forth in the preceding paragraph requires for driving-in the clamps and the safety nails in the proper co-relative positions a specially constructed tool, which is provided with two separate guides for the clamps and for the nails, said guides being situate in two planes standing perpendicularly in regard to one another.

Tools of this complicated nature are comparatively expensive, taking into consideration that they are only adapted for one sort of joint binders. Another disadvantage consists in the cumbersome handling these tools necessitate in their utilization, special care and skill being demanded in properly applying them.

To obviate the drawbacks attached to the employment of these special tools, according to the. present invention a hammer of the ordinary type is rendered applicable for driving into the two members to be secured together both the U-shaped clamps and the nails securing the latter by entering the perforated shanks thereof.

In the annexed drawing is illustrated, by way of example, one mode of carrying into practice my invention.

Figure 1 shows in side elevation the improved hammer and the manner of apply ing it for marking the spot where the safety nail has to be driven in to penetrate the shanks of the U-shaped clamp which was previously driven in by means of the hammer.

Fig. 2 is a front elevation of the hammer head in accordance with Fig. l.

A hammer of the. ordinary type, comprising the handle a and the hammer head. is provided with a flat face Z) of such a size that it can be employed for driving in U shaped clamps 0 forming joint binders of the nature set out in the preamble to this specification.

To enable such a hammer to be conveniently applicable for also driving in the safety nail, which has to be lodged in the two shanks of the U-shaped clamp to secure the latter in place, it is necessary to fit the hammer so that it is adapted for marking the proper spot for inserting the nail, thus safeguarding against wrong insertion of the nail when being driven in, irrespective of the skill and careful attentiveness of the operator.

This special adaptation of the hammer is attained in the example illustrated in the drawing by providing the hammer head; preferably the peen h thereof, with an exclsion, which is bordered by the two surfaces 71, j. These surfaces '5, j stand perpendicularly in regard to each other and the surface 7' corresponds substantially in its width.

with the U-shaped clamp a at its back. The other surface 2' holds a sharpened tooth directed parallelly in regard to the surface y and secured in such a position, that it marks the spot for properly driving in the safety nail when the surface j covers the back of the U-shaped clamp 0 driven home as shown 1n 1. This marking is rendered clearly visible by pressing on the face 7) of the hammer, so that t e tooth k pricks the member 6 of the two parts (Z, a secured together as indicated in Fig. 1.

After having marked the spot for the safety nail. the hammer is reversed and used for driving in the nail, which penetrates the two shanks f, g of the clamp 0, thus securing the latter against removal.

The slot pricked by the tooth 70 will be deep enough to give the nail a firm hold in the proper position for driving in.

The bifurcated peen h of the hammer is in the usual way adapted for extracting nails from boxes and the like.

I wish it to be distinct-1y understood, that I do not limit myself to the precise construction shown. seeing that various modifications may be carried out in the adaptation of the hammer to the several brands of U-shaped clamps sold in the market, and I therefore reserve the right to all such modifications that properly fall within the scope of the following claim.

What I do claim as my invention, and desire to secure by {Letters Patent, is:

An -improved hammer especially for driving home joint binders which comprise a U-shaped clamp and a flat barbed nail to be driven through the two shanks of the clamp when the latter has been applied, said hammer having in its peen a recess bordered by two plane surfaces standing perpendicularly in regard to one another and a sharpened tooth attached in the aforesaid recess so as to point in'the longitudinal direction of the peen, said tooth being arranged at a distance from the corner of the recess, substantially as described and shown.

In witness whereof I have hereunto signed my name this 22d day of January, 1914, in the presence of two subscribing witnesses:

.EDOUARD CHARLES GLARDON.

Witnesses ERNEST H. L. MUMMENHQFF, EDUARD HoPPE. 

